<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script type="text/javascript">
    var  a=parseInt(prompt("请输入第一个整数"));
    var  b=parseInt(prompt("请输入第二个整数"));
    if (a+b>100){
        alert("大于100:"+(a+b-100));
    }else {
        alert("小于100:"+(a+b));
    }
</script>
</body>
</html>